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Select the incorrect statement about cathode rays.
- a)They travel from cathode to anode
- b)They travel in a straight line in the absence of an external electrical or magnetic field
- c)Their nature is independent of the materials of cathode
- d)Their nature is dependent on the nature of the gas present
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Select the incorrect statement about cathode rays.a)They travel from c...
(a) Cathode rays travel from cathode (source) to anode. True
(b) In the absence of these fields, they are not deflected but in the presence of electrical field, they are deflected indicating that they are charged. Thus, True
(c) Their nature is independent of the material of cathode. True
(d) Their nature is independent of the nature of the gas.
Thus, given statement is false.
(b) In the absence of these fields, they are not deflected but in the presence of electrical field, they are deflected indicating that they are charged. Thus, True
(c) Their nature is independent of the material of cathode. True
(d) Their nature is independent of the nature of the gas.
Thus, given statement is false.
Most Upvoted Answer
Select the incorrect statement about cathode rays.a)They travel from c...
Explanation:
Cathode rays are streams of electrons that are emitted from the cathode (negative electrode) and move towards the anode (positive electrode) in a cathode ray tube. They were first discovered by J.J. Thomson in the late 19th century.
Let's examine each statement to determine which one is not correct:
a) They start from the cathode and move towards the anode.
This statement is correct. Cathode rays are negatively charged particles (electrons) that are attracted to the positively charged anode. Therefore, they move from the cathode to the anode.
b) They travel in a straight line in the absence of an external electrical or magnetic field.
This statement is also correct. Cathode rays are not deflected by electric or magnetic fields in the absence of external forces. They move in straight lines from the cathode to the anode.
c) Characteristics of cathode rays do not depend upon the material of electrodes in a cathode ray tube.
This statement is correct. The characteristics of cathode rays, such as their speed, charge, and behavior, do not depend on the material of the electrodes. They are determined by the properties of the electrons themselves.
d) Characteristics of cathode rays depend upon the nature of the gas present in the cathode ray tube.
This statement is not correct. The characteristics of cathode rays do not depend on the nature of the gas present in the cathode ray tube. The gas in the tube may affect the interactions between the cathode rays and the gas atoms, but it does not change the fundamental properties of the cathode rays themselves.
Therefore, the correct answer is option 'D' - Characteristics of cathode rays depend upon the nature of the gas present in the cathode ray tube.
Cathode rays are streams of electrons that are emitted from the cathode (negative electrode) and move towards the anode (positive electrode) in a cathode ray tube. They were first discovered by J.J. Thomson in the late 19th century.
Let's examine each statement to determine which one is not correct:
a) They start from the cathode and move towards the anode.
This statement is correct. Cathode rays are negatively charged particles (electrons) that are attracted to the positively charged anode. Therefore, they move from the cathode to the anode.
b) They travel in a straight line in the absence of an external electrical or magnetic field.
This statement is also correct. Cathode rays are not deflected by electric or magnetic fields in the absence of external forces. They move in straight lines from the cathode to the anode.
c) Characteristics of cathode rays do not depend upon the material of electrodes in a cathode ray tube.
This statement is correct. The characteristics of cathode rays, such as their speed, charge, and behavior, do not depend on the material of the electrodes. They are determined by the properties of the electrons themselves.
d) Characteristics of cathode rays depend upon the nature of the gas present in the cathode ray tube.
This statement is not correct. The characteristics of cathode rays do not depend on the nature of the gas present in the cathode ray tube. The gas in the tube may affect the interactions between the cathode rays and the gas atoms, but it does not change the fundamental properties of the cathode rays themselves.
Therefore, the correct answer is option 'D' - Characteristics of cathode rays depend upon the nature of the gas present in the cathode ray tube.
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Select the incorrect statement about cathode rays.a)They travel from cathode to anodeb)They travel in a straight line in the absence of an external electrical or magnetic fieldc)Their nature is independent of the materials of cathoded)Their nature is dependent on the nature of the gas presentCorrect answer is option 'D'. Can you explain this answer? for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Select the incorrect statement about cathode rays.a)They travel from cathode to anodeb)They travel in a straight line in the absence of an external electrical or magnetic fieldc)Their nature is independent of the materials of cathoded)Their nature is dependent on the nature of the gas presentCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Select the incorrect statement about cathode rays.a)They travel from cathode to anodeb)They travel in a straight line in the absence of an external electrical or magnetic fieldc)Their nature is independent of the materials of cathoded)Their nature is dependent on the nature of the gas presentCorrect answer is option 'D'. Can you explain this answer?.
Select the incorrect statement about cathode rays.a)They travel from cathode to anodeb)They travel in a straight line in the absence of an external electrical or magnetic fieldc)Their nature is independent of the materials of cathoded)Their nature is dependent on the nature of the gas presentCorrect answer is option 'D'. Can you explain this answer? for Class 11 2025 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about Select the incorrect statement about cathode rays.a)They travel from cathode to anodeb)They travel in a straight line in the absence of an external electrical or magnetic fieldc)Their nature is independent of the materials of cathoded)Their nature is dependent on the nature of the gas presentCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 11 2025 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Select the incorrect statement about cathode rays.a)They travel from cathode to anodeb)They travel in a straight line in the absence of an external electrical or magnetic fieldc)Their nature is independent of the materials of cathoded)Their nature is dependent on the nature of the gas presentCorrect answer is option 'D'. Can you explain this answer?.
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Select the incorrect statement about cathode rays.a)They travel from cathode to anodeb)They travel in a straight line in the absence of an external electrical or magnetic fieldc)Their nature is independent of the materials of cathoded)Their nature is dependent on the nature of the gas presentCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for Select the incorrect statement about cathode rays.a)They travel from cathode to anodeb)They travel in a straight line in the absence of an external electrical or magnetic fieldc)Their nature is independent of the materials of cathoded)Their nature is dependent on the nature of the gas presentCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of Select the incorrect statement about cathode rays.a)They travel from cathode to anodeb)They travel in a straight line in the absence of an external electrical or magnetic fieldc)Their nature is independent of the materials of cathoded)Their nature is dependent on the nature of the gas presentCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
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